What does it mean by your government name?
government name (plural government names) One's (partial or full) legal name, as opposed to one's nickname or street name; one's government-recognized name.
Where did the term government name come from?
The word government derives from the Greek verb κυβερνάω [kubernáo] meaning to steer with a gubernaculum (rudder), the metaphorical sense being attested in the literature of classical antiquity, including Plato's Ship of State.